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Finding the Fourth Proportional to 15,220.65, 22,830.99 and 9,960.10

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Solution

The fourth proportional to 15,220.65, 22,830.99 and 9,960.10 is: 14,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.65 : 22,830.99 = 9,960.10 : x
  2. Step 2: Convert to fraction form
    15,220.65/22,830.99 = 9,960.10/x
  3. Step 3: Cross multiply
    15,220.65x = 22,830.99 × 9,960.10
  4. Step 4: Simplify right side
    15,220.65x = 227,398,849.07
  5. Step 5: Solve for x
    x = 227,398,849.07/15,220.65
  6. Step 6: Final answer
    x = 14,940.15

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.